Island



(No Model.) 2 Sheets-Sheet 1. S. W. GREENE & M. MAURAN.

ATTACHMENT FOR TYPE WRITERS.

N0. 550,447. atnted Nov. 26, 1895.

Fl E115.

lgmmm-rl 4/ INVENTEIRS WITNESS E5.

(No Model.) 2 Sheets-Sheet 2.

S. W GREENE & M. MAURAN.

ATTACHMENT FOR TYPE WRITERS.

No. 550,447. Patented Nov. 26, 1895.

I111, Illlll UNITED STATES] PATENT OFFICE.

SAMUELIVARD GREENE, OF EAST GREENWICH, AND MAX MAURAN, OF

' PROVIDENCE, RHODE ISLAND.

SPECIFICATION forming part of Letters Patent No. 550,447, dated November 26, 1895.

Application filed May 22, 1895. Serial No. 550,177. (No model.)

To all whom it may concern:

Be it known that we, SAMUEL WVARD GREENE, of East Greenwich, county of Kent, and MAX MAURAN, of Providence, county of Providence, State of Rhode Island, have invented certain new and useful Improvements in Attachments for Type-WVriters and we do hereby declare that the following is a full, clear, and exact description thereof, reference bein had to the accom an 'n 'drawin s and.

b D b 7 t0 the letters of reference marked thereon, which form a part of this specification.

This invention refers particularly to attachments to type-writers for effecting an automatic return of the carriage to its prior position after a line has been printed.

In order that a type-writing machine shall do its work properly-that is, that the line printed shall be straight and the words and letters spaced the required distance apart the carriage on which the paper is held must have a perfectly free action, that it may carry the paper along in front of the type without being clogged and rendered sluggish in its action by any retarding effect caused by returning parts of the reversing attachment back to an operating position. To accomplish this, all operating connection between the carriage-feed and the returning mechanism should be cut off when the carriage has been returned and continue so during the printing and until it is necessary again to return it. It is fully explained and illustrated in this specification and the accompanying drawings.

Figure 1 represents a side elevation of the attachment separate from the type-writer. Fig. 2 shows a vertical section of the parts shown in Fig. 1, excepting the hangers or standards, taken lengthwise through the center of the shaft, which is shown in elevation. Fig. 3 shows the right-hand side of the gearwheel that returns the carriage. Fig. 4 is an elevation of the right end of the spring-drum, showing the pawl and its releasing-cam. Fig. 5 shows an edge view of the releasing-cam from the under side. Fig. 6 is a view of the inner end of the spring-drum with spring inclosed. Fig. 7 is a side view of the pawl separate. Fig. 8 shows in perspective a rear elevation of a type-writer with the attachment.

The mechanism is attached to the under sideof the type-writer by hangers R R, which hold a stationary shaft N in boxes on their lower ends. The shaft N is held from turning in the hangers by set-screws n n in the under'sides of the hangers. Commencing at the left end of the shaft N, the first piece is the gear-wheel B, with a pulley-rim P cast on or otherwise made fast to the outer side of the gear. This wheel B has a circle of ratchet-teeth I) made on the inner face of it. (See Fig. 3.) 'A pulley-drum J comes next to wheel B on the shaft,fitting over the circle of ratchet-teeth b and has a score made in its periphery to receive a cord 8, by which power is applied to turn the drum. A spring drum or chamber A is fitted to go easily inside of the pulley-drum J and is cast integral with or otherwise held fast on the hub of the hanger B, so it will not turn. An involute spring f is held in the drum A, having its outer end fast to the drum and its inner end fast to the hub g of the pulley-drum J, (see Fig. 6,) so that the turning of the drum J by means of the cord S will wind the spring up by its inner end around the hub g of the drum J.

A horizontal pawl a is held in a groove made in the inner surface of the drum J. (See Fig. 2.) This pawl a travels on the circle of ratchet-teeth b on wheel B and has its inner end fitted to catch into those teeth when moved in one direction. A small open spiral spring j is placed around the pawl to press it into the ratchet-teeth when not held out by the cam d. The cam cl consists of a curved inclined plane made on the end or edge of a plate fast on the outer side of the drum A. (See Fig. 5.) The pawl a has a notch 1 made on the under side near its outer end, that fits onto the incline of the cam when the rotation of the drum brings them in contact and the incline draws the pawl out of engagement with the ratchet-teeth. The attachment is designed to'apply to different styles of type-writers having different ways of returning the carriage. Some, like the Ha1nmond,have a gear-wheel engaging in ICO a rack on the carriage, others, like the Remington, having a cord connected with the carriage. For this reason the wheel 13 is provided with gear-teeth to engage in a rack or a cord to form a connection with the carriage, and only mechanical skill is required to place pulleys to conduct the cord to operate any of the diiferent machines, and whether the gear or cord is used the operation of the attachment is the same. Supposing the carriage to be connected by means of the rack G, attached directly to the carriage, as in Fig. 1,

with or without an intermediate gear, or by the cord 7, when the carriage has passed across and a line has been printed the cord 8, which may be connected to a treadle a, or a lever operated by the knee, such as are used in organs, is drawn on and the drum J will be turned around, carrying the wheel B with it, by the pawl a, catching into the ratchet-teeth b, and wheel B, either by the rack C or cord 0*, will draw the carriage back to its starting-point to print another line. the same time the spring f will be wound up around the hub g of drum J by the turning of that drum. \Vhen the carriage is clear back, the pressure of the foot or knee is removed and the spring f will turn the drum J back, and by winding up the cord 3 will return the treadle a or lever back for the next return of the carriage. The drum J in returning carries the pawl at around until its notch '5 catches on the cam 01, which draws the pawl clear of the ratchet-teeth b and leaves the wheel B perfectly free to be moved by the carriage when printing. It will be readily seen that the return of the drum J by the spring or otherwise will relieve the power that feeds the carriage of doing that work.

In some cases by reversing the position of the hangers the attachment may be placed on top of table or bed of the machine, as in Fig. 1.

nected with the carriage, and having ratchet teeth on one side, a drum held loosely on said shaft and carrying a pawl engaging with said ratchet teeth, stationary plate cam arranged to catch into a notch in the pawl and draw it out of engagement with the ratchet teeth, and thereby free said wheel from the drum, substantially as described.

2. In an attachment to typewriters, for returning the carriage, the following instrumentalities; the wheel B, having a circle of ratchet teeth on one side, the drum J, pawl (it, carried thereby and its spring j, means for returning drum J, after it has returned the carriage, cam d, shaft N, and treadle a, arranged and operating substantially as described.

SAMUEL WVARD GREENE. MAX MAURAN.

\Vitnesses:

BENJ. ARNOLD, CHARLES HANNIGAN. 

